Shared mailboxes let a group of users view and send email, and share a calender, and open a contact list from a common mailbox.
#UNABLE TO ADD SHARED MAILBOX IN OUTLOOK 2016 HOW TO#
In the Value to add text box, add the following text to set a primary SMTP address, and then select the Add OK two times, and then close Active Directory Users and Computers.Īfter you make this change, ask users to access the shared mailboxes again through POP/IMAP. Learn how to open a shared mailbox in Outlook. Right-click the object, and then select Properties.įind the userPrincipalName attribute and note the attribute value (for example, the proxyAddresses attribute, and then select Edit. Open Active Directory Users and Computers.įind the user object for the service account. Method 2: Add a primary SMTP address to the proxyAddresses attributeĪdd a primary SMTP address to the proxyAddresses attribute for the service account by using Active Directory Users and Computers. For more information about how to create a mailbox for an existing user, see Create user mailboxes in Exchange Server. However, they cannot open the Mailbox in Outlook 2016 and later or in Office 365 versions of Outlook. Users with such accounts should have no trouble accessing OWA and Outlook 2013. Use the Exchange Admin Center or Exchange Management Shell to create a mailbox for the service account. Remember that a connected account in a subsidiary domain cannot access some shared mailboxes hosted on Outlook 2016 or later. Method 1: Create a mailbox for the service account To fix this problem, use either of the following methods (but only one). This problem occurs because the POP/IMAP authentication process expects authenticated users to have a primary SMTP address defined. When this problem occurs, the service account can still access the shared mailboxes through Microsoft Outlook, Outlook Web App, Exchange Web Services, or Exchange ActiveSync. "R=""? NO LOGIN failed:"" Msg=NoPrimarySmtpAddress"
For more details: Opening Shared Mailbox - The set of folders cannot be opened. Additionally, you see an error message in the POP/IMAP protocol logs that resembles the following: In addition, I found a similar case and it suggested you check whether the shared mailbox was assigned with exchange online license, and check mapi was enabled for the shared mailbox. In this scenario, users can't access the shared mailboxes through POP/IMAP by using the service account.
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